[Kernel-packages] [Bug 1890951] Re: btrfs not writable when mounted without "skip_balance"
today's kernel update seems to have fixed it, as expected. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1890951 Title: btrfs not writable when mounted without "skip_balance" Status in linux package in Ubuntu: Confirmed Bug description: Yesterday, I upgraded to Ubuntu 20.04, since when there is a problem with the btrfs volume it is installed on. The system hung when launching a btrfs balance and on next boot, it hung indefinitely, when trying to created the volatile files and dirs. Booting from a Debian buster rescue system, I noticed that I was unable to create or delete any files and I noticed the following in dmesg: [Sun Aug 9 12:21:35 2020] [ cut here ] [Sun Aug 9 12:21:35 2020] kernel BUG at fs/btrfs/relocation.c:2626! [Sun Aug 9 12:21:35 2020] invalid opcode: [#1] SMP PTI [Sun Aug 9 12:21:35 2020] CPU: 1 PID: 4537 Comm: btrfs-balance Tainted: G O 5.4.47 #1 [Sun Aug 9 12:21:35 2020] Hardware name: FUJITSU D3401-H1/D3401-H1, BIOS V5.0.0.11 R1.14.0 for D3401-H1x06/09/2016 [Sun Aug 9 12:21:35 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:35 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 [Sun Aug 9 12:21:35 2020] RSP: 0018:8887e0b0bb20 EFLAGS: 00010246 [Sun Aug 9 12:21:35 2020] RAX: 8887dfab5280 RBX: RCX: [Sun Aug 9 12:21:35 2020] RDX: 8887e0b0bb24 RSI: 8887e0b0bc10 RDI: 8887dfab52c0 [Sun Aug 9 12:21:35 2020] RBP: 8887dfab5280 R08: 8887dfab52c0 R09: a0491e7e [Sun Aug 9 12:21:35 2020] R10: 8887f4ba7e70 R11: 090ed158 R12: 8887dfab5280 [Sun Aug 9 12:21:35 2020] R13: 8887fd330800 R14: 8887e0b0bc10 R15: 8887e7fa66e8 [Sun Aug 9 12:21:35 2020] FS: () GS:0e24() knlGS: [Sun Aug 9 12:21:35 2020] CS: 0010 DS: ES: CR0: 80050033 [Sun Aug 9 12:21:35 2020] CR2: 55b4d5b7cfe0 CR3: 0200a004 CR4: 003606e0 [Sun Aug 9 12:21:35 2020] DR0: DR1: DR2: [Sun Aug 9 12:21:35 2020] DR3: DR6: fffe0ff0 DR7: 0400 [Sun Aug 9 12:21:35 2020] Call Trace: [Sun Aug 9 12:21:35 2020] do_relocation+0xb6/0x4c2 [btrfs] [Sun Aug 9 12:21:35 2020] ? calcu_metadata_size.isra.36.constprop.42+0x9e/0xc4 [btrfs] [Sun Aug 9 12:21:35 2020] ? do_raw_spin_lock+0x2f/0x5a [Sun Aug 9 12:21:35 2020] ? btrfs_block_rsv_refill+0x4b/0x8b [btrfs] [Sun Aug 9 12:21:35 2020] relocate_tree_blocks+0x301/0x427 [btrfs] [Sun Aug 9 12:21:35 2020] ? tree_insert+0x49/0x4e [btrfs] [Sun Aug 9 12:21:35 2020] ? add_tree_block.isra.38+0x11e/0x144 [btrfs] [Sun Aug 9 12:21:35 2020] relocate_block_group+0x279/0x49e [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_block_group+0x15e/0x23d [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_chunk+0x25/0x8c [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_balance+0xaf0/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] ? btrfs_balance+0xd45/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] balance_kthread+0x32/0x46 [btrfs] [Sun Aug 9 12:21:35 2020] kthread+0xf5/0xfa [Sun Aug 9 12:21:35 2020] ? kthread_associate_blkcg+0x86/0x86 [Sun Aug 9 12:21:35 2020] ret_from_fork+0x3a/0x50 [Sun Aug 9 12:21:35 2020] Modules linked in: btrfs xor zstd_decompress zstd_compress lzo_compress lzo_decompress zlib_deflate raid6_pq libcrc32c sd_mod ipmi_devintf ipmi_msghandler sg x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass crc32_pclmul crc32c_intel iTCO_wdt ghash_clmulni_intel aesni_intel crypto_simd psmouse ahci cryptd libahci i2c_i801 serio_raw glue_helper intel_pch_thermal evdev video thermal acpi_pad button fan jc42 ftsteutates nct6775 hwmon_vid coretemp ip_tables x_tables autofs4 e1000e [Sun Aug 9 12:21:36 2020] ---[ end trace 442b443de6cecc6e ]--- [Sun Aug 9 12:21:36 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:36 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 So this is obviously a btrfs bug that got introduced by the newer btrfs code in the newer kernel, although, booting an older kernel didn't fix it. Apparently something about the fs is messed up now and no balance can be run. The only temporary remedy I found was to add the skip_balance mount option to /etc/fstab, but of course, this is a crutch, and when you can't run balance, then the fs is bound to run out of space at some
[Kernel-packages] [Bug 1890951] Re: btrfs not writable when mounted without "skip_balance"
Also see: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1889669 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1890951 Title: btrfs not writable when mounted without "skip_balance" Status in linux package in Ubuntu: Confirmed Bug description: Yesterday, I upgraded to Ubuntu 20.04, since when there is a problem with the btrfs volume it is installed on. The system hung when launching a btrfs balance and on next boot, it hung indefinitely, when trying to created the volatile files and dirs. Booting from a Debian buster rescue system, I noticed that I was unable to create or delete any files and I noticed the following in dmesg: [Sun Aug 9 12:21:35 2020] [ cut here ] [Sun Aug 9 12:21:35 2020] kernel BUG at fs/btrfs/relocation.c:2626! [Sun Aug 9 12:21:35 2020] invalid opcode: [#1] SMP PTI [Sun Aug 9 12:21:35 2020] CPU: 1 PID: 4537 Comm: btrfs-balance Tainted: G O 5.4.47 #1 [Sun Aug 9 12:21:35 2020] Hardware name: FUJITSU D3401-H1/D3401-H1, BIOS V5.0.0.11 R1.14.0 for D3401-H1x06/09/2016 [Sun Aug 9 12:21:35 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:35 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 [Sun Aug 9 12:21:35 2020] RSP: 0018:8887e0b0bb20 EFLAGS: 00010246 [Sun Aug 9 12:21:35 2020] RAX: 8887dfab5280 RBX: RCX: [Sun Aug 9 12:21:35 2020] RDX: 8887e0b0bb24 RSI: 8887e0b0bc10 RDI: 8887dfab52c0 [Sun Aug 9 12:21:35 2020] RBP: 8887dfab5280 R08: 8887dfab52c0 R09: a0491e7e [Sun Aug 9 12:21:35 2020] R10: 8887f4ba7e70 R11: 090ed158 R12: 8887dfab5280 [Sun Aug 9 12:21:35 2020] R13: 8887fd330800 R14: 8887e0b0bc10 R15: 8887e7fa66e8 [Sun Aug 9 12:21:35 2020] FS: () GS:0e24() knlGS: [Sun Aug 9 12:21:35 2020] CS: 0010 DS: ES: CR0: 80050033 [Sun Aug 9 12:21:35 2020] CR2: 55b4d5b7cfe0 CR3: 0200a004 CR4: 003606e0 [Sun Aug 9 12:21:35 2020] DR0: DR1: DR2: [Sun Aug 9 12:21:35 2020] DR3: DR6: fffe0ff0 DR7: 0400 [Sun Aug 9 12:21:35 2020] Call Trace: [Sun Aug 9 12:21:35 2020] do_relocation+0xb6/0x4c2 [btrfs] [Sun Aug 9 12:21:35 2020] ? calcu_metadata_size.isra.36.constprop.42+0x9e/0xc4 [btrfs] [Sun Aug 9 12:21:35 2020] ? do_raw_spin_lock+0x2f/0x5a [Sun Aug 9 12:21:35 2020] ? btrfs_block_rsv_refill+0x4b/0x8b [btrfs] [Sun Aug 9 12:21:35 2020] relocate_tree_blocks+0x301/0x427 [btrfs] [Sun Aug 9 12:21:35 2020] ? tree_insert+0x49/0x4e [btrfs] [Sun Aug 9 12:21:35 2020] ? add_tree_block.isra.38+0x11e/0x144 [btrfs] [Sun Aug 9 12:21:35 2020] relocate_block_group+0x279/0x49e [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_block_group+0x15e/0x23d [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_chunk+0x25/0x8c [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_balance+0xaf0/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] ? btrfs_balance+0xd45/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] balance_kthread+0x32/0x46 [btrfs] [Sun Aug 9 12:21:35 2020] kthread+0xf5/0xfa [Sun Aug 9 12:21:35 2020] ? kthread_associate_blkcg+0x86/0x86 [Sun Aug 9 12:21:35 2020] ret_from_fork+0x3a/0x50 [Sun Aug 9 12:21:35 2020] Modules linked in: btrfs xor zstd_decompress zstd_compress lzo_compress lzo_decompress zlib_deflate raid6_pq libcrc32c sd_mod ipmi_devintf ipmi_msghandler sg x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass crc32_pclmul crc32c_intel iTCO_wdt ghash_clmulni_intel aesni_intel crypto_simd psmouse ahci cryptd libahci i2c_i801 serio_raw glue_helper intel_pch_thermal evdev video thermal acpi_pad button fan jc42 ftsteutates nct6775 hwmon_vid coretemp ip_tables x_tables autofs4 e1000e [Sun Aug 9 12:21:36 2020] ---[ end trace 442b443de6cecc6e ]--- [Sun Aug 9 12:21:36 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:36 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 So this is obviously a btrfs bug that got introduced by the newer btrfs code in the newer kernel, although, booting an older kernel didn't fix it. Apparently something about the fs is messed up now and no balance can be run. The only temporary remedy I found was to add the skip_balance mount option to /etc/fstab, but of course, this is a crutch, and when you can't run balance, then the fs is bound to run out of space
[Kernel-packages] [Bug 1890951] Re: btrfs not writable when mounted without "skip_balance"
** No longer affects: linux -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1890951 Title: btrfs not writable when mounted without "skip_balance" Status in linux package in Ubuntu: Confirmed Bug description: Yesterday, I upgraded to Ubuntu 20.04, since when there is a problem with the btrfs volume it is installed on. The system hung when launching a btrfs balance and on next boot, it hung indefinitely, when trying to created the volatile files and dirs. Booting from a Debian buster rescue system, I noticed that I was unable to create or delete any files and I noticed the following in dmesg: [Sun Aug 9 12:21:35 2020] [ cut here ] [Sun Aug 9 12:21:35 2020] kernel BUG at fs/btrfs/relocation.c:2626! [Sun Aug 9 12:21:35 2020] invalid opcode: [#1] SMP PTI [Sun Aug 9 12:21:35 2020] CPU: 1 PID: 4537 Comm: btrfs-balance Tainted: G O 5.4.47 #1 [Sun Aug 9 12:21:35 2020] Hardware name: FUJITSU D3401-H1/D3401-H1, BIOS V5.0.0.11 R1.14.0 for D3401-H1x06/09/2016 [Sun Aug 9 12:21:35 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:35 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 [Sun Aug 9 12:21:35 2020] RSP: 0018:8887e0b0bb20 EFLAGS: 00010246 [Sun Aug 9 12:21:35 2020] RAX: 8887dfab5280 RBX: RCX: [Sun Aug 9 12:21:35 2020] RDX: 8887e0b0bb24 RSI: 8887e0b0bc10 RDI: 8887dfab52c0 [Sun Aug 9 12:21:35 2020] RBP: 8887dfab5280 R08: 8887dfab52c0 R09: a0491e7e [Sun Aug 9 12:21:35 2020] R10: 8887f4ba7e70 R11: 090ed158 R12: 8887dfab5280 [Sun Aug 9 12:21:35 2020] R13: 8887fd330800 R14: 8887e0b0bc10 R15: 8887e7fa66e8 [Sun Aug 9 12:21:35 2020] FS: () GS:0e24() knlGS: [Sun Aug 9 12:21:35 2020] CS: 0010 DS: ES: CR0: 80050033 [Sun Aug 9 12:21:35 2020] CR2: 55b4d5b7cfe0 CR3: 0200a004 CR4: 003606e0 [Sun Aug 9 12:21:35 2020] DR0: DR1: DR2: [Sun Aug 9 12:21:35 2020] DR3: DR6: fffe0ff0 DR7: 0400 [Sun Aug 9 12:21:35 2020] Call Trace: [Sun Aug 9 12:21:35 2020] do_relocation+0xb6/0x4c2 [btrfs] [Sun Aug 9 12:21:35 2020] ? calcu_metadata_size.isra.36.constprop.42+0x9e/0xc4 [btrfs] [Sun Aug 9 12:21:35 2020] ? do_raw_spin_lock+0x2f/0x5a [Sun Aug 9 12:21:35 2020] ? btrfs_block_rsv_refill+0x4b/0x8b [btrfs] [Sun Aug 9 12:21:35 2020] relocate_tree_blocks+0x301/0x427 [btrfs] [Sun Aug 9 12:21:35 2020] ? tree_insert+0x49/0x4e [btrfs] [Sun Aug 9 12:21:35 2020] ? add_tree_block.isra.38+0x11e/0x144 [btrfs] [Sun Aug 9 12:21:35 2020] relocate_block_group+0x279/0x49e [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_block_group+0x15e/0x23d [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_chunk+0x25/0x8c [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_balance+0xaf0/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] ? btrfs_balance+0xd45/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] balance_kthread+0x32/0x46 [btrfs] [Sun Aug 9 12:21:35 2020] kthread+0xf5/0xfa [Sun Aug 9 12:21:35 2020] ? kthread_associate_blkcg+0x86/0x86 [Sun Aug 9 12:21:35 2020] ret_from_fork+0x3a/0x50 [Sun Aug 9 12:21:35 2020] Modules linked in: btrfs xor zstd_decompress zstd_compress lzo_compress lzo_decompress zlib_deflate raid6_pq libcrc32c sd_mod ipmi_devintf ipmi_msghandler sg x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass crc32_pclmul crc32c_intel iTCO_wdt ghash_clmulni_intel aesni_intel crypto_simd psmouse ahci cryptd libahci i2c_i801 serio_raw glue_helper intel_pch_thermal evdev video thermal acpi_pad button fan jc42 ftsteutates nct6775 hwmon_vid coretemp ip_tables x_tables autofs4 e1000e [Sun Aug 9 12:21:36 2020] ---[ end trace 442b443de6cecc6e ]--- [Sun Aug 9 12:21:36 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:36 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 So this is obviously a btrfs bug that got introduced by the newer btrfs code in the newer kernel, although, booting an older kernel didn't fix it. Apparently something about the fs is messed up now and no balance can be run. The only temporary remedy I found was to add the skip_balance mount option to /etc/fstab, but of course, this is a crutch, and when you can't run balance, then the fs is bound to run out of space at some point. --- ProblemType: Bug
[Kernel-packages] [Bug 1890951] Re: btrfs not writable when mounted without "skip_balance"
apparently fixed in kernel 5.4.56 https://lore.kernel.org/linux-btrfs/8a3370fd-7cda-78d2-b036-8350c5a3e...@gmx.com/T/#r52f03985dd7982c8f92c8a65089583f01c62020b Will it become available for Ubuntu? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1890951 Title: btrfs not writable when mounted without "skip_balance" Status in linux package in Ubuntu: Confirmed Bug description: Yesterday, I upgraded to Ubuntu 20.04, since when there is a problem with the btrfs volume it is installed on. The system hung when launching a btrfs balance and on next boot, it hung indefinitely, when trying to created the volatile files and dirs. Booting from a Debian buster rescue system, I noticed that I was unable to create or delete any files and I noticed the following in dmesg: [Sun Aug 9 12:21:35 2020] [ cut here ] [Sun Aug 9 12:21:35 2020] kernel BUG at fs/btrfs/relocation.c:2626! [Sun Aug 9 12:21:35 2020] invalid opcode: [#1] SMP PTI [Sun Aug 9 12:21:35 2020] CPU: 1 PID: 4537 Comm: btrfs-balance Tainted: G O 5.4.47 #1 [Sun Aug 9 12:21:35 2020] Hardware name: FUJITSU D3401-H1/D3401-H1, BIOS V5.0.0.11 R1.14.0 for D3401-H1x06/09/2016 [Sun Aug 9 12:21:35 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:35 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 [Sun Aug 9 12:21:35 2020] RSP: 0018:8887e0b0bb20 EFLAGS: 00010246 [Sun Aug 9 12:21:35 2020] RAX: 8887dfab5280 RBX: RCX: [Sun Aug 9 12:21:35 2020] RDX: 8887e0b0bb24 RSI: 8887e0b0bc10 RDI: 8887dfab52c0 [Sun Aug 9 12:21:35 2020] RBP: 8887dfab5280 R08: 8887dfab52c0 R09: a0491e7e [Sun Aug 9 12:21:35 2020] R10: 8887f4ba7e70 R11: 090ed158 R12: 8887dfab5280 [Sun Aug 9 12:21:35 2020] R13: 8887fd330800 R14: 8887e0b0bc10 R15: 8887e7fa66e8 [Sun Aug 9 12:21:35 2020] FS: () GS:0e24() knlGS: [Sun Aug 9 12:21:35 2020] CS: 0010 DS: ES: CR0: 80050033 [Sun Aug 9 12:21:35 2020] CR2: 55b4d5b7cfe0 CR3: 0200a004 CR4: 003606e0 [Sun Aug 9 12:21:35 2020] DR0: DR1: DR2: [Sun Aug 9 12:21:35 2020] DR3: DR6: fffe0ff0 DR7: 0400 [Sun Aug 9 12:21:35 2020] Call Trace: [Sun Aug 9 12:21:35 2020] do_relocation+0xb6/0x4c2 [btrfs] [Sun Aug 9 12:21:35 2020] ? calcu_metadata_size.isra.36.constprop.42+0x9e/0xc4 [btrfs] [Sun Aug 9 12:21:35 2020] ? do_raw_spin_lock+0x2f/0x5a [Sun Aug 9 12:21:35 2020] ? btrfs_block_rsv_refill+0x4b/0x8b [btrfs] [Sun Aug 9 12:21:35 2020] relocate_tree_blocks+0x301/0x427 [btrfs] [Sun Aug 9 12:21:35 2020] ? tree_insert+0x49/0x4e [btrfs] [Sun Aug 9 12:21:35 2020] ? add_tree_block.isra.38+0x11e/0x144 [btrfs] [Sun Aug 9 12:21:35 2020] relocate_block_group+0x279/0x49e [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_block_group+0x15e/0x23d [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_chunk+0x25/0x8c [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_balance+0xaf0/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] ? btrfs_balance+0xd45/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] balance_kthread+0x32/0x46 [btrfs] [Sun Aug 9 12:21:35 2020] kthread+0xf5/0xfa [Sun Aug 9 12:21:35 2020] ? kthread_associate_blkcg+0x86/0x86 [Sun Aug 9 12:21:35 2020] ret_from_fork+0x3a/0x50 [Sun Aug 9 12:21:35 2020] Modules linked in: btrfs xor zstd_decompress zstd_compress lzo_compress lzo_decompress zlib_deflate raid6_pq libcrc32c sd_mod ipmi_devintf ipmi_msghandler sg x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass crc32_pclmul crc32c_intel iTCO_wdt ghash_clmulni_intel aesni_intel crypto_simd psmouse ahci cryptd libahci i2c_i801 serio_raw glue_helper intel_pch_thermal evdev video thermal acpi_pad button fan jc42 ftsteutates nct6775 hwmon_vid coretemp ip_tables x_tables autofs4 e1000e [Sun Aug 9 12:21:36 2020] ---[ end trace 442b443de6cecc6e ]--- [Sun Aug 9 12:21:36 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:36 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 So this is obviously a btrfs bug that got introduced by the newer btrfs code in the newer kernel, although, booting an older kernel didn't fix it. Apparently something about the fs is messed up now and no balance can be run. The only temporary remedy I found was to add the skip_balance mount
[Kernel-packages] [Bug 1890951] Re: btrfs not writable when mounted without "skip_balance"
Apparently this is (probably) fixed in kernels from 5.4.54 https://lore.kernel.org/linux-btrfs/8a3370fd-7cda- 78d2-b036-8350c5a3e...@gmx.com/T/#r52f03985dd7982c8f92c8a65089583f01c62020b so I hope it becomes available in Ubuntu soon. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1890951 Title: btrfs not writable when mounted without "skip_balance" Status in linux package in Ubuntu: Confirmed Bug description: Yesterday, I upgraded to Ubuntu 20.04, since when there is a problem with the btrfs volume it is installed on. The system hung when launching a btrfs balance and on next boot, it hung indefinitely, when trying to created the volatile files and dirs. Booting from a Debian buster rescue system, I noticed that I was unable to create or delete any files and I noticed the following in dmesg: [Sun Aug 9 12:21:35 2020] [ cut here ] [Sun Aug 9 12:21:35 2020] kernel BUG at fs/btrfs/relocation.c:2626! [Sun Aug 9 12:21:35 2020] invalid opcode: [#1] SMP PTI [Sun Aug 9 12:21:35 2020] CPU: 1 PID: 4537 Comm: btrfs-balance Tainted: G O 5.4.47 #1 [Sun Aug 9 12:21:35 2020] Hardware name: FUJITSU D3401-H1/D3401-H1, BIOS V5.0.0.11 R1.14.0 for D3401-H1x06/09/2016 [Sun Aug 9 12:21:35 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:35 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 [Sun Aug 9 12:21:35 2020] RSP: 0018:8887e0b0bb20 EFLAGS: 00010246 [Sun Aug 9 12:21:35 2020] RAX: 8887dfab5280 RBX: RCX: [Sun Aug 9 12:21:35 2020] RDX: 8887e0b0bb24 RSI: 8887e0b0bc10 RDI: 8887dfab52c0 [Sun Aug 9 12:21:35 2020] RBP: 8887dfab5280 R08: 8887dfab52c0 R09: a0491e7e [Sun Aug 9 12:21:35 2020] R10: 8887f4ba7e70 R11: 090ed158 R12: 8887dfab5280 [Sun Aug 9 12:21:35 2020] R13: 8887fd330800 R14: 8887e0b0bc10 R15: 8887e7fa66e8 [Sun Aug 9 12:21:35 2020] FS: () GS:0e24() knlGS: [Sun Aug 9 12:21:35 2020] CS: 0010 DS: ES: CR0: 80050033 [Sun Aug 9 12:21:35 2020] CR2: 55b4d5b7cfe0 CR3: 0200a004 CR4: 003606e0 [Sun Aug 9 12:21:35 2020] DR0: DR1: DR2: [Sun Aug 9 12:21:35 2020] DR3: DR6: fffe0ff0 DR7: 0400 [Sun Aug 9 12:21:35 2020] Call Trace: [Sun Aug 9 12:21:35 2020] do_relocation+0xb6/0x4c2 [btrfs] [Sun Aug 9 12:21:35 2020] ? calcu_metadata_size.isra.36.constprop.42+0x9e/0xc4 [btrfs] [Sun Aug 9 12:21:35 2020] ? do_raw_spin_lock+0x2f/0x5a [Sun Aug 9 12:21:35 2020] ? btrfs_block_rsv_refill+0x4b/0x8b [btrfs] [Sun Aug 9 12:21:35 2020] relocate_tree_blocks+0x301/0x427 [btrfs] [Sun Aug 9 12:21:35 2020] ? tree_insert+0x49/0x4e [btrfs] [Sun Aug 9 12:21:35 2020] ? add_tree_block.isra.38+0x11e/0x144 [btrfs] [Sun Aug 9 12:21:35 2020] relocate_block_group+0x279/0x49e [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_block_group+0x15e/0x23d [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_chunk+0x25/0x8c [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_balance+0xaf0/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] ? btrfs_balance+0xd45/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] balance_kthread+0x32/0x46 [btrfs] [Sun Aug 9 12:21:35 2020] kthread+0xf5/0xfa [Sun Aug 9 12:21:35 2020] ? kthread_associate_blkcg+0x86/0x86 [Sun Aug 9 12:21:35 2020] ret_from_fork+0x3a/0x50 [Sun Aug 9 12:21:35 2020] Modules linked in: btrfs xor zstd_decompress zstd_compress lzo_compress lzo_decompress zlib_deflate raid6_pq libcrc32c sd_mod ipmi_devintf ipmi_msghandler sg x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass crc32_pclmul crc32c_intel iTCO_wdt ghash_clmulni_intel aesni_intel crypto_simd psmouse ahci cryptd libahci i2c_i801 serio_raw glue_helper intel_pch_thermal evdev video thermal acpi_pad button fan jc42 ftsteutates nct6775 hwmon_vid coretemp ip_tables x_tables autofs4 e1000e [Sun Aug 9 12:21:36 2020] ---[ end trace 442b443de6cecc6e ]--- [Sun Aug 9 12:21:36 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:36 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 So this is obviously a btrfs bug that got introduced by the newer btrfs code in the newer kernel, although, booting an older kernel didn't fix it. Apparently something about the fs is messed up now and no balance can be run. The only temporary remedy I found
[Kernel-packages] [Bug 1890951] Re: btrfs not writable when mounted without "skip_balance"
Launchpad has imported 10 comments from the remote bug at https://bugzilla.kernel.org/show_bug.cgi?id=203405. If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. On 2019-04-24T00:34:54+00:00 furlongm wrote: If I mount with skip_balance, the following does not happen. But if I try to start a balance processes go into a D state and the balance hangs. [ 173.488407] kernel BUG at ../fs/btrfs/relocation.c:1449! [ 173.488410] invalid opcode: [#1] SMP PTI [ 173.488414] CPU: 7 PID: 2542 Comm: btrfs-balance Tainted: G O 4.12.14-lp150.12.58-default #1 openSUSE Leap 15.0 [ 173.488416] Hardware name: Dell Inc. OptiPlex 9020/00V62H, BIOS A24 10/24/2018 [ 173.488417] task: 8803c85f80c0 task.stack: c90002234000 [ 173.488439] RIP: 0010:create_reloc_root+0x1dc/0x1f0 [btrfs] [ 173.488440] RSP: 0018:c90002237910 EFLAGS: 00010282 [ 173.488442] RAX: ffef RBX: 880408c99c00 RCX: 0001 [ 173.488444] RDX: 0005 RSI: 88040bdc2a80 RDI: 0286 [ 173.488445] RBP: 8803dd514d98 R08: 88040b8c5a80 R09: [ 173.488447] R10: 0002 R11: 88040bdc2a80 R12: fff7 [ 173.488448] R13: 88040679c000 R14: 8803efafe800 R15: 000c4000 [ 173.488450] FS: () GS:88041ebc() knlGS: [ 173.488451] CS: 0010 DS: ES: CR0: 80050033 [ 173.488453] CR2: 7f26c9915b00 CR3: 0200a006 CR4: 001606e0 [ 173.488454] Call Trace: [ 173.488468] btrfs_init_reloc_root+0x5b/0xa0 [btrfs] [ 173.488478] record_root_in_trans+0xb7/0xf0 [btrfs] [ 173.488488] btrfs_record_root_in_trans+0x4e/0x60 [btrfs] [ 173.488497] start_transaction+0xa6/0x410 [btrfs] [ 173.488506] __btrfs_prealloc_file_range+0xbb/0x460 [btrfs] [ 173.488516] btrfs_prealloc_file_range+0x10/0x20 [btrfs] [ 173.488527] prealloc_file_extent_cluster+0x113/0x200 [btrfs] [ 173.488537] relocate_file_extent_cluster+0x8d/0x470 [btrfs] [ 173.488546] ? __btrfs_end_transaction+0x1c1/0x2e0 [btrfs] [ 173.488555] relocate_data_extent+0x5f/0xc0 [btrfs] [ 173.488564] relocate_block_group+0x495/0x6f0 [btrfs] [ 173.488573] btrfs_relocate_block_group+0x188/0x230 [btrfs] [ 173.488583] btrfs_relocate_chunk+0x4a/0xf0 [btrfs] [ 173.488592] btrfs_shrink_device+0x1c4/0x4c0 [btrfs] [ 173.488602] __btrfs_balance+0xd4/0xbe0 [btrfs] [ 173.488611] ? insert_balance_item.isra.33+0x9a/0x350 [btrfs] [ 173.488614] ? printk+0x43/0x4b [ 173.488624] ? btrfs_dev_replace_lock.part.6+0x15/0x20 [btrfs] [ 173.488634] ? btrfs_dev_replace_lock+0x85/0x90 [btrfs] [ 173.488643] btrfs_balance+0x2de/0x5c0 [btrfs] [ 173.488651] ? btrfs_balance+0x5c0/0x5c0 [btrfs] [ 173.488659] balance_kthread+0x56/0x80 [btrfs] [ 173.488662] kthread+0x11a/0x130 [ 173.488664] ? kthread_create_on_node+0x40/0x40 [ 173.488667] ret_from_fork+0x35/0x40 [ 173.488669] Code: 48 c7 83 dc 00 00 00 00 00 00 00 48 c7 83 e4 00 00 00 00 00 00 00 c6 83 ec 00 00 00 00 c6 83 ed 00 00 00 00 e9 1b ff ff ff 0f 0b <0f> 0b 0f 0b 0f 0b 0f 0b 66 66 2e 0f 1f 84 00 00 00 00 00 90 0f [ 173.488687] Modules linked in: usblp ccm af_packet ebtable_filter ebtables nf_log_ipv6 xt_comment nf_log_ipv4 nf_log_common xt_LOG xt_limit devlink nfnetlink_cthelper nfnetlink vboxpci(O) vboxnetadp(O) vboxnetflt(O) ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT xt_pkttype xt_tcpudp vboxdrv(O) iptable_filter ip6table_mangle nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_ipv4 nf_defrag_ipv4 ip_tables xt_conntrack bnep nf_conntrack libcrc32c ip6table_filter msr ip6_tables x_tables arc4 nls_iso8859_1 nls_cp437 vfat fat intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic coretemp iwlmvm kvm_intel btusb mac80211 kvm btrtl snd_hda_intel btbcm irqbypass btintel iwlwifi crc32_pclmul ghash_clmulni_intel snd_hda_codec pcbc bluetooth [ 173.488716] snd_hda_core dell_wmi dell_smbios ecdh_generic snd_hwdep aesni_intel sparse_keymap mei_wdt dcdbas aes_x86_64 crypto_simd glue_helper snd_pcm cryptd cfg80211 rfkill i2c_i801 pcspkr snd_timer lpc_ich wmi e1000e snd mei_me ptp pps_core shpchp mei thermal soundcore button btrfs xor hid_generic usbhid raid6_pq sr_mod cdrom i915 crc32c_intel i2c_algo_bit xhci_pci drm_kms_helper syscopyarea ehci_pci sysfillrect xhci_hcd sysimgblt fb_sys_fops ehci_hcd ahci libahci drm usbcore drm_panel_orientation_quirks video sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc scsi_dh_alua efivarfs [ 173.488750] ---[ end trace c9b049613add55d3 ]--- [ 173.488765] RIP: 0010:create_reloc_root+0x1dc/0x1f0 [btrfs] [ 173.488772] RSP: 0018:c90002237910 EFLAGS: 00010282 [ 173.488779]
[Kernel-packages] [Bug 1890951] Re: btrfs not writable when mounted without "skip_balance"
** Bug watch added: Linux Kernel Bug Tracker #203405 https://bugzilla.kernel.org/show_bug.cgi?id=203405 ** Also affects: linux via https://bugzilla.kernel.org/show_bug.cgi?id=203405 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1890951 Title: btrfs not writable when mounted without "skip_balance" Status in Linux: Unknown Status in linux package in Ubuntu: Confirmed Bug description: Yesterday, I upgraded to Ubuntu 20.04, since when there is a problem with the btrfs volume it is installed on. The system hung when launching a btrfs balance and on next boot, it hung indefinitely, when trying to created the volatile files and dirs. Booting from a Debian buster rescue system, I noticed that I was unable to create or delete any files and I noticed the following in dmesg: [Sun Aug 9 12:21:35 2020] [ cut here ] [Sun Aug 9 12:21:35 2020] kernel BUG at fs/btrfs/relocation.c:2626! [Sun Aug 9 12:21:35 2020] invalid opcode: [#1] SMP PTI [Sun Aug 9 12:21:35 2020] CPU: 1 PID: 4537 Comm: btrfs-balance Tainted: G O 5.4.47 #1 [Sun Aug 9 12:21:35 2020] Hardware name: FUJITSU D3401-H1/D3401-H1, BIOS V5.0.0.11 R1.14.0 for D3401-H1x06/09/2016 [Sun Aug 9 12:21:35 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:35 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 [Sun Aug 9 12:21:35 2020] RSP: 0018:8887e0b0bb20 EFLAGS: 00010246 [Sun Aug 9 12:21:35 2020] RAX: 8887dfab5280 RBX: RCX: [Sun Aug 9 12:21:35 2020] RDX: 8887e0b0bb24 RSI: 8887e0b0bc10 RDI: 8887dfab52c0 [Sun Aug 9 12:21:35 2020] RBP: 8887dfab5280 R08: 8887dfab52c0 R09: a0491e7e [Sun Aug 9 12:21:35 2020] R10: 8887f4ba7e70 R11: 090ed158 R12: 8887dfab5280 [Sun Aug 9 12:21:35 2020] R13: 8887fd330800 R14: 8887e0b0bc10 R15: 8887e7fa66e8 [Sun Aug 9 12:21:35 2020] FS: () GS:0e24() knlGS: [Sun Aug 9 12:21:35 2020] CS: 0010 DS: ES: CR0: 80050033 [Sun Aug 9 12:21:35 2020] CR2: 55b4d5b7cfe0 CR3: 0200a004 CR4: 003606e0 [Sun Aug 9 12:21:35 2020] DR0: DR1: DR2: [Sun Aug 9 12:21:35 2020] DR3: DR6: fffe0ff0 DR7: 0400 [Sun Aug 9 12:21:35 2020] Call Trace: [Sun Aug 9 12:21:35 2020] do_relocation+0xb6/0x4c2 [btrfs] [Sun Aug 9 12:21:35 2020] ? calcu_metadata_size.isra.36.constprop.42+0x9e/0xc4 [btrfs] [Sun Aug 9 12:21:35 2020] ? do_raw_spin_lock+0x2f/0x5a [Sun Aug 9 12:21:35 2020] ? btrfs_block_rsv_refill+0x4b/0x8b [btrfs] [Sun Aug 9 12:21:35 2020] relocate_tree_blocks+0x301/0x427 [btrfs] [Sun Aug 9 12:21:35 2020] ? tree_insert+0x49/0x4e [btrfs] [Sun Aug 9 12:21:35 2020] ? add_tree_block.isra.38+0x11e/0x144 [btrfs] [Sun Aug 9 12:21:35 2020] relocate_block_group+0x279/0x49e [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_block_group+0x15e/0x23d [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_chunk+0x25/0x8c [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_balance+0xaf0/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] ? btrfs_balance+0xd45/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] balance_kthread+0x32/0x46 [btrfs] [Sun Aug 9 12:21:35 2020] kthread+0xf5/0xfa [Sun Aug 9 12:21:35 2020] ? kthread_associate_blkcg+0x86/0x86 [Sun Aug 9 12:21:35 2020] ret_from_fork+0x3a/0x50 [Sun Aug 9 12:21:35 2020] Modules linked in: btrfs xor zstd_decompress zstd_compress lzo_compress lzo_decompress zlib_deflate raid6_pq libcrc32c sd_mod ipmi_devintf ipmi_msghandler sg x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass crc32_pclmul crc32c_intel iTCO_wdt ghash_clmulni_intel aesni_intel crypto_simd psmouse ahci cryptd libahci i2c_i801 serio_raw glue_helper intel_pch_thermal evdev video thermal acpi_pad button fan jc42 ftsteutates nct6775 hwmon_vid coretemp ip_tables x_tables autofs4 e1000e [Sun Aug 9 12:21:36 2020] ---[ end trace 442b443de6cecc6e ]--- [Sun Aug 9 12:21:36 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:36 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 So this is obviously a btrfs bug that got introduced by the newer btrfs code in the newer kernel, although, booting an older kernel didn't fix it. Apparently something about the fs is messed up now and no balance can be run. The
[Kernel-packages] [Bug 1890951] Re: btrfs not writable when mounted without "skip_balance"
apport information ** Changed in: linux (Ubuntu) Status: Incomplete => New ** Tags added: apport-collected focal ** Description changed: Yesterday, I upgraded to Ubuntu 20.04, since when there is a problem with the btrfs volume it is installed on. The system hung when launching a btrfs balance and on next boot, it hung indefinitely, when trying to created the volatile files and dirs. Booting from a Debian buster rescue system, I noticed that I was unable to create or delete any files and I noticed the following in dmesg: [Sun Aug 9 12:21:35 2020] [ cut here ] [Sun Aug 9 12:21:35 2020] kernel BUG at fs/btrfs/relocation.c:2626! [Sun Aug 9 12:21:35 2020] invalid opcode: [#1] SMP PTI [Sun Aug 9 12:21:35 2020] CPU: 1 PID: 4537 Comm: btrfs-balance Tainted: G O 5.4.47 #1 [Sun Aug 9 12:21:35 2020] Hardware name: FUJITSU D3401-H1/D3401-H1, BIOS V5.0.0.11 R1.14.0 for D3401-H1x06/09/2016 [Sun Aug 9 12:21:35 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:35 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 [Sun Aug 9 12:21:35 2020] RSP: 0018:8887e0b0bb20 EFLAGS: 00010246 [Sun Aug 9 12:21:35 2020] RAX: 8887dfab5280 RBX: RCX: [Sun Aug 9 12:21:35 2020] RDX: 8887e0b0bb24 RSI: 8887e0b0bc10 RDI: 8887dfab52c0 [Sun Aug 9 12:21:35 2020] RBP: 8887dfab5280 R08: 8887dfab52c0 R09: a0491e7e [Sun Aug 9 12:21:35 2020] R10: 8887f4ba7e70 R11: 090ed158 R12: 8887dfab5280 [Sun Aug 9 12:21:35 2020] R13: 8887fd330800 R14: 8887e0b0bc10 R15: 8887e7fa66e8 [Sun Aug 9 12:21:35 2020] FS: () GS:0e24() knlGS: [Sun Aug 9 12:21:35 2020] CS: 0010 DS: ES: CR0: 80050033 [Sun Aug 9 12:21:35 2020] CR2: 55b4d5b7cfe0 CR3: 0200a004 CR4: 003606e0 [Sun Aug 9 12:21:35 2020] DR0: DR1: DR2: [Sun Aug 9 12:21:35 2020] DR3: DR6: fffe0ff0 DR7: 0400 [Sun Aug 9 12:21:35 2020] Call Trace: [Sun Aug 9 12:21:35 2020] do_relocation+0xb6/0x4c2 [btrfs] [Sun Aug 9 12:21:35 2020] ? calcu_metadata_size.isra.36.constprop.42+0x9e/0xc4 [btrfs] [Sun Aug 9 12:21:35 2020] ? do_raw_spin_lock+0x2f/0x5a [Sun Aug 9 12:21:35 2020] ? btrfs_block_rsv_refill+0x4b/0x8b [btrfs] [Sun Aug 9 12:21:35 2020] relocate_tree_blocks+0x301/0x427 [btrfs] [Sun Aug 9 12:21:35 2020] ? tree_insert+0x49/0x4e [btrfs] [Sun Aug 9 12:21:35 2020] ? add_tree_block.isra.38+0x11e/0x144 [btrfs] [Sun Aug 9 12:21:35 2020] relocate_block_group+0x279/0x49e [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_block_group+0x15e/0x23d [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_chunk+0x25/0x8c [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_balance+0xaf0/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] ? btrfs_balance+0xd45/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] balance_kthread+0x32/0x46 [btrfs] [Sun Aug 9 12:21:35 2020] kthread+0xf5/0xfa [Sun Aug 9 12:21:35 2020] ? kthread_associate_blkcg+0x86/0x86 [Sun Aug 9 12:21:35 2020] ret_from_fork+0x3a/0x50 [Sun Aug 9 12:21:35 2020] Modules linked in: btrfs xor zstd_decompress zstd_compress lzo_compress lzo_decompress zlib_deflate raid6_pq libcrc32c sd_mod ipmi_devintf ipmi_msghandler sg x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass crc32_pclmul crc32c_intel iTCO_wdt ghash_clmulni_intel aesni_intel crypto_simd psmouse ahci cryptd libahci i2c_i801 serio_raw glue_helper intel_pch_thermal evdev video thermal acpi_pad button fan jc42 ftsteutates nct6775 hwmon_vid coretemp ip_tables x_tables autofs4 e1000e [Sun Aug 9 12:21:36 2020] ---[ end trace 442b443de6cecc6e ]--- [Sun Aug 9 12:21:36 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:36 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 - So this is obviously a btrfs bug that got introduced by the newer btrfs - code in the newer kernel, although, booting an older kernel didn't fix - it. Apparently something about the fs is messed up now and no balance - can be run. The only temporary remedy I found was to add the - skip_balance mount option to /etc/fstab, but of course, this is a - crutch, and when you can't run balance, then the fs is bound to run out - of space at some point. + So this is obviously a btrfs bug that got introduced by the newer btrfs code in the newer kernel, although, booting an older kernel didn't fix it. Apparently something about the fs is
[Kernel-packages] [Bug 1890951] Re: btrfs not writable when mounted without "skip_balance"
Unfortunately, producing the logs apart from the backtrace above isn't really possible. As soon as I reproduce the bug, the FS becomes unwritable, so that no logs can be obtained. That's a catch22 ** Changed in: linux (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1890951 Title: btrfs not writable when mounted without "skip_balance" Status in linux package in Ubuntu: New Bug description: Yesterday, I upgraded to Ubuntu 20.04, since when there is a problem with the btrfs volume it is installed on. The system hung when launching a btrfs balance and on next boot, it hung indefinitely, when trying to created the volatile files and dirs. Booting from a Debian buster rescue system, I noticed that I was unable to create or delete any files and I noticed the following in dmesg: [Sun Aug 9 12:21:35 2020] [ cut here ] [Sun Aug 9 12:21:35 2020] kernel BUG at fs/btrfs/relocation.c:2626! [Sun Aug 9 12:21:35 2020] invalid opcode: [#1] SMP PTI [Sun Aug 9 12:21:35 2020] CPU: 1 PID: 4537 Comm: btrfs-balance Tainted: G O 5.4.47 #1 [Sun Aug 9 12:21:35 2020] Hardware name: FUJITSU D3401-H1/D3401-H1, BIOS V5.0.0.11 R1.14.0 for D3401-H1x06/09/2016 [Sun Aug 9 12:21:35 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:35 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 [Sun Aug 9 12:21:35 2020] RSP: 0018:8887e0b0bb20 EFLAGS: 00010246 [Sun Aug 9 12:21:35 2020] RAX: 8887dfab5280 RBX: RCX: [Sun Aug 9 12:21:35 2020] RDX: 8887e0b0bb24 RSI: 8887e0b0bc10 RDI: 8887dfab52c0 [Sun Aug 9 12:21:35 2020] RBP: 8887dfab5280 R08: 8887dfab52c0 R09: a0491e7e [Sun Aug 9 12:21:35 2020] R10: 8887f4ba7e70 R11: 090ed158 R12: 8887dfab5280 [Sun Aug 9 12:21:35 2020] R13: 8887fd330800 R14: 8887e0b0bc10 R15: 8887e7fa66e8 [Sun Aug 9 12:21:35 2020] FS: () GS:0e24() knlGS: [Sun Aug 9 12:21:35 2020] CS: 0010 DS: ES: CR0: 80050033 [Sun Aug 9 12:21:35 2020] CR2: 55b4d5b7cfe0 CR3: 0200a004 CR4: 003606e0 [Sun Aug 9 12:21:35 2020] DR0: DR1: DR2: [Sun Aug 9 12:21:35 2020] DR3: DR6: fffe0ff0 DR7: 0400 [Sun Aug 9 12:21:35 2020] Call Trace: [Sun Aug 9 12:21:35 2020] do_relocation+0xb6/0x4c2 [btrfs] [Sun Aug 9 12:21:35 2020] ? calcu_metadata_size.isra.36.constprop.42+0x9e/0xc4 [btrfs] [Sun Aug 9 12:21:35 2020] ? do_raw_spin_lock+0x2f/0x5a [Sun Aug 9 12:21:35 2020] ? btrfs_block_rsv_refill+0x4b/0x8b [btrfs] [Sun Aug 9 12:21:35 2020] relocate_tree_blocks+0x301/0x427 [btrfs] [Sun Aug 9 12:21:35 2020] ? tree_insert+0x49/0x4e [btrfs] [Sun Aug 9 12:21:35 2020] ? add_tree_block.isra.38+0x11e/0x144 [btrfs] [Sun Aug 9 12:21:35 2020] relocate_block_group+0x279/0x49e [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_block_group+0x15e/0x23d [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_relocate_chunk+0x25/0x8c [btrfs] [Sun Aug 9 12:21:35 2020] btrfs_balance+0xaf0/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] ? btrfs_balance+0xd45/0xd45 [btrfs] [Sun Aug 9 12:21:35 2020] balance_kthread+0x32/0x46 [btrfs] [Sun Aug 9 12:21:35 2020] kthread+0xf5/0xfa [Sun Aug 9 12:21:35 2020] ? kthread_associate_blkcg+0x86/0x86 [Sun Aug 9 12:21:35 2020] ret_from_fork+0x3a/0x50 [Sun Aug 9 12:21:35 2020] Modules linked in: btrfs xor zstd_decompress zstd_compress lzo_compress lzo_decompress zlib_deflate raid6_pq libcrc32c sd_mod ipmi_devintf ipmi_msghandler sg x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass crc32_pclmul crc32c_intel iTCO_wdt ghash_clmulni_intel aesni_intel crypto_simd psmouse ahci cryptd libahci i2c_i801 serio_raw glue_helper intel_pch_thermal evdev video thermal acpi_pad button fan jc42 ftsteutates nct6775 hwmon_vid coretemp ip_tables x_tables autofs4 e1000e [Sun Aug 9 12:21:36 2020] ---[ end trace 442b443de6cecc6e ]--- [Sun Aug 9 12:21:36 2020] RIP: 0010:select_reloc_root+0x5b/0x19f [btrfs] [Sun Aug 9 12:21:36 2020] Code: c0 c7 44 24 04 00 00 00 00 e8 8b 9d 17 e1 48 89 df 4c 89 f6 48 8d 54 24 04 e8 9c e6 ff ff 48 8b 58 60 48 89 c5 48 85 db 75 02 <0f> 0b 48 8b 43 20 a8 02 75 02 0f 0b 48 83 bb df 01 00 00 f8 75 45 So this is obviously a btrfs bug that got introduced by the newer btrfs code in the newer kernel, although, booting an older kernel didn't fix it. Apparently something about the fs is messed up now and no balance can be run. The only
